package com.luli.test;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.springframework.web.util.UriUtils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * 陆离
 * 百度地图，经纬度转换
 */
public class PositionConversionUtil {

    public static String URL = "https://api.map.baidu.com/reverse_geocoding/v3?";

    public static String AK = "olQPwzKv9tCCzBVF7g41wFt6jBMIPEto";

    /**
     * @param longitude 经度
     * @param latitude  纬度
     * @return
     */
    public static String getLocation(String longitude, String latitude) throws Exception {
            SearchHttpAK snCal = new SearchHttpAK();

            Map params = new LinkedHashMap<String, String>();
            params.put("ak", AK);
            params.put("output", "json");
            params.put("coordtype", "wgs84ll");
            params.put("extensions_poi", "0");
            //"31.225696563611,121.49884033194"
            params.put("location", longitude + "," + latitude);

        return snCal.requestGetAK(URL, params);

    }


    /**
     * 默认ak
     * 选择了ak，使用IP白名单校验：
     * 根据您选择的AK已为您生成调用代码
     * 检测到您当前的ak设置了IP白名单校验
     * 您的IP白名单中的IP非公网IP，请设置为公网IP，否则将请求失败
     * 请在IP地址为xxxxxxx的计算发起请求，否则将请求失败
     */
    public  static String requestGetAK(String strUrl, Map<String, String> param) throws Exception {
        if (strUrl == null || strUrl.length() <= 0 || param == null || param.size() <= 0) {
            return null;
        }
        StringBuffer queryString = new StringBuffer();
        queryString.append(strUrl);
        for (Map.Entry<?, ?> pair : param.entrySet()) {
            queryString.append(pair.getKey() + "=");
            //    第一种方式使用的 jdk 自带的转码方式  第二种方式使用的 spring 的转码方法 两种均可
            //    queryString.append(URLEncoder.encode((String) pair.getValue(), "UTF-8").replace("+", "%20") + "&");
            queryString.append(UriUtils.encode((String) pair.getValue(), "UTF-8") + "&");
        }

        if (queryString.length() > 0) {
            queryString.deleteCharAt(queryString.length() - 1);
        }

        java.net.URL url = new URL(queryString.toString());
        System.out.println("请求地址：" + queryString.toString());
        URLConnection httpConnection = (HttpURLConnection) url.openConnection();
        httpConnection.connect();

        InputStreamReader isr = new InputStreamReader(httpConnection.getInputStream());
        BufferedReader reader = new BufferedReader(isr);
        StringBuffer buffer = new StringBuffer();
        String line;
        while ((line = reader.readLine()) != null) {
            buffer.append(line);
        }
        reader.close();
        isr.close();
        String s = buffer.toString();
        System.out.println(s);
        return s;
    }

}
